Miter machine



F. SCOTT MITER MACHINE March 22, 1.932.

Filed Sept. 19, 19:51-

2`Sheets-Sheet l Eqi.

INVENToR El ank cutt vHI.)7 `ATTORNEY F. SCOTT MI TER MACHINE March 22,1932.

FiledSepj.. 19, 1931 2 Sheets-Sheet 2 INVENTOR :1'- r' E11/11A 5 :mit

HIS ATTORNEY WITNESS:

"25 Centtlie sides-of-saidbarfand oonneetediby With alde'pres'sio'n for:receiving spring guidefmembersfor thesawaorcuttingrimplee plane'dlYPaLfendMafL-fzz,v 1932-1 I n Y ,f 1&8-5056915;

, e IRKSCOTT; orxoRBISoNIA, rENNsvLvANInj e ikQMHERMACHINET L Animation:neaA september-19', 1,931.; `Serenatas".1563,79?. i

er Y andYhas-'oraneobjeot to'provide azdevice hav-r views.: t Y V- f .ff,

ing-guidesvvhiehmaybesetto variousangles, The improved'mitermaohine,whieh"forrns;

and with a? cuttingfimplementarranged: ato.'thesubjectmatterfofthisapplication,come v y Y -prises ailoed 10,Wliiehlin ordinary construe;- 55'V e vAfuIther, object of'ftheyinvention isv to tionfwill be an integralscasting,` although -tlie aprovide-ajdevice having `aloe/dl lWitlif guideS-inventionl'is in` noWay-limited to materia-1 Y mounted to slidethereonggandacentral-memf.or. method of making.,Tl1e bed is provided n ber?-pivotallyconnectedwith tlleqguides With adove taledislot `11ezztending;along Y Y 10"Wherleby'saidguidesmaybe' setto varying tlie median line ofsaidrbed,lWitha ban-12 69 f anglesforin parallel relatio-ngand'withf any mountedto: slide inssaid Vdove tailed slots such angle ;or parallel aacfuttingimplement :(Atfioriadjaoenttothe oppositeendsofthe to ibi'seetV tliefangle orftoeut an article at 90 barlQ', spaced pairs of uprightst,1344-13? and n d yrelativeto the-parallel guidese# A Y- f Y 14:-141 lare-er,eet`ed..1 Thesezuprights .have 15" .vivAfurthermobjeetoftheinventionlistopro# vertically` extending grooves 15,1 as shown; 6.54vide-improvedmeansfor guiding the saW,-or 1' more particularlyat'Figure L,vvith blocks cutting implemennrelative toi the-guide-mem-16e-167': 'slidably'mounted in saidfgrooves bers'.f 2f" A V Both of thepairs of 4upriglits"13;13:- and A 4further `object 'of/the inventionisfto vpro-` 14:-1411are substantially videntical#and' eachvidefimproved means Vfor#clampingV Work isfprovidedjwith across-head [1TvWhiohris I, fagainsttheguide-'members;=y k l secured/in anyyapprovedmanneras'byftlie The-invention therefore,comprises-a bed boltsorscrews 18, so that the upri'ghtstrue` y havingfabar-slidablelongitudinallyrelativeture so formed is `rigid Withtl1e1barl2-l Onethereto-,Withgui-de-membersfpivoted'adjalor'bothofthefbloeks'llffisfprovided Thisinvention)irelates'to.Lmiterfrnaeliines;lresponding l, parte yl'tliroughoutA1, the several' l" 75 means offslotsWithf the"fbedf;whereby-` the Y pressed member v19 Y. for holdingthe`vblocks i Y movement of the-'bar '-Wiill-change the angle'v 16S- 16"yieldingly V,at their ,upper limit Lfor y Y of [the guidesysaid'barCarrying al'soLmovable i the reasons which i will; :beghereinafter eX"36 ment positioningk said cuttingimplementrto f Pivoted tothe barl'l221and .8:9

v3ltl1einventionfandthe mtas the -bar1121'so`thattheubar. may beadjusted f50-ix- Y'Like.-eharaeters:oifreferenceindicate;'cor-r2,;,thatethe savv" is:Widenthanfthe;length-'of'LTVA accuratelyf-biseetthe angle ormedwbythey VQlgsuelipivoting beingbymeansaof'serews 22,guidefand "improved *meansiflforf clamping insertedqini properlypositioned'orices,one.y `Workagainstltheguides. l f' pairjof'whielrgareshown at 23. Anynum- The drawingsillustrateanembedmentofberOf-theseorlC-es 23`may be provldedialong f 1.;- "e 'f l'l vided With slots 24: and 525::With Clamping: Flgum 2 sa' new f themachine 'm end members;extendingjthrouglfjsuchslots; rep-V resentedmerely for tliepurpose ojillustrajf.

the guideblocks 16-*16 so that the cutting ed f extends below theseblocks and is not v y absolutely accurate. In other words, no mata ectedthereby.

The bed is also provided with other grooves 31 and 32 in which aremounted bars 33 and 34. These bars slide longitudinally, and areprovided with spaced recesses 35, and a pin 36 is insertedthrough one ofsaid recesses andinto a socket 37 in the bed, shown more particularly atFigure 5. Each ofthese bars 34 carriesan eccentric clamping member 38which is provided with an upstandln ilange 39 so that by operating oneof Vsai clamping members, work interlyingsaid clam ing member and'it-sadjacent guide may be c amped firmly therebetween. r Y

As shown at Figure 1, the guides 20 and 21 i are set approximately at 90relative to each other, an the saw 28 is positioned to bisect this angleforming a miter ofy Mitering at 45 is, of course, done in the greatmajority f: cases, but mitering at othery angles is vat times necessary.To set the device to form a miter to fit any angle, the angle is firstsecured on abevel, and the bevel applied to the guide members. In thecase of a 45 miter, the angle will be securedby the use of an ordinarycarpgnters square. The clamping screws 26 will V*loosened and the bar 12moved longitudinally yuntil ,the remote sidesof the guide members itexactly to the inside of the square. The clamping members 26 are nowtightened to hold these guide members in this position, and work placedbetween one guide member and its adjacent clampingy member,l and clampedtherein, the bar 34 being moved as necessity :requires to accommodatethe work.

The saw,being now employed, ,will bisectthe 909 angle andorm a 45 angle.Mitering at a 45 angle is a relatively slmple process, but mitering tofit an yangle other than 45 is far less simple. With applicants device,kan ordinary carpenters bevel is `fitted to the angle. It isthen ittedto the remote sides of the guide members 20 and 21. f

Let it be assumedk that it is an acute angle that is to be fitted byffamiter and that the bevel, when set tol fit such angle, will require theyguides `to be set 1 atdotA and 4dash line positlon, shown at Figure l.-Merely setting thesefguides` to. exactly correspond to the angle to befitted will absolutely insure a fit i oi the miter as the sawmust inallcases bisect vrthe angle whateveriit may be. It is obvious also thatan obtuse angle, wherein the guides wiki .lie between. the full linepositions and Vthe'dotted linepositions, will beset in the same manner.,and themiter will be rcut with absolute fidelity. n As shown indotted-lines, the guides have been set in alinement so that thesawgwillcuta angle. `Bylthe use `of this device,v` the accurate`-itting yof amiter fjointlto any angle is extremely simple `as it is always extremelysimple Vto obtainfthe exact 'angle on a. carpenterls bevel. This beingobwor -a vtap ony the to of therib 29 will is in condition to operate.r

rights, means slidably connecting ktioned bars.

-Lemmens tained, and the guides 20 and 21 being t0 fit this bevel, themiter cut will always be A removed, or other worlg inserted, the saw israised to its upper limit-where it is held yieldinglly(7 by` means ofthe members 19. When the is inserted and the saw is readl for use, .AiSen se it so that it wil drop to position for wor When the work to bemtered iswider than would .be `received vwith the 'parts arrangedas-shown in full lines at Fi ure 1, the pivot screwsf22 are removed, thear 12 movedt the left until thesey screws will engage some pairs ofyperforations as 4those shown at 23. Thescrews are again nserted,`and thedevice The miter machine, herein illustrated, may be'modied in various,ways without ydeparting from the invention herein set forthandhereinafter claimed..V l

The invention is hereby vclaimed as follows:

1. A miter machine comprising a bed having a, plurality oflongitudinally extending slots,` bars mounted in saidpslots, uprightsmounted upon one ofsaid rbars and movable therewith, a cutting implementlongitudinallymovable through said uprights and guided thereby, guidemembers mounted upon the ybed in convergence, the converging ends beingconnected with the bar carryin said upe guides to. thebedr upon oppositesides of said bar, work clamping mem ers carried by the other bars, andmeansto secure said other bars yat various longitudinally adjustedpositions.

2. Armiter machinecomprising a Vwork table havinga pluralit of parallelslots in Aits face, a ybar-,mount saw guidescarried by said bar, barsmounted inthe other slots, work 'des pivotedto the lirst mentioned barlandgldxxtending over kthe 'second v,mentioned bars, means ,to hx thesecond ,mentioned bars in longitudinal adjust,- ment, and clamps carriedby the second mentionedflmrs.vr z y* 3. A Amiter machinecomprisinga-work table havin 'a plurality of parallel slots in itsV face, a armounted to slidey along the 1,

median line'of thek table in one slot,"sa guidescarried by said bar,barsmounted in the other slots, work. guidespivotedto the yfirst mentioned"bar and extendin "over the second mentioned bars, means to x the secondmentioned bars vin longitudinal adjustment, and clamps carried bythesecond men- 4. A miter machine` comprising a work yto slide in one slot,l

its face, a bar mounted to slide inV oneslot, eccentric clampscarriedbythe second ymensaw guides carried by said bar, bars uponopposite sides. of the irst mentioned bar s mounted in the other slots,Work guides pivff oted to the first mentioned bar and extending tionedbars.

In testimony Vwhereof nI name tothis specification. i

f FR

over the second mentioned bars, meansto fix vthesecond mentioned bars inlongitudinal adjustment, and :clamps 0nd mentioned bars.

V5. A; miter machine comprisingl a Work table having a pluralityofparallel slots in Acarried vby they sec`k l its face," a bar mountedyto slide in one slot, n

saw guides carried by said bar, bars mounted in the otherSlOtS, Workguides pivoted-to and 'extending upon opposite sides of the 'first'mentionedbar. and extending over the second mentioned bars, means to ixthe second mentioned bars in longitudinal adjustment,"y

and vclamps carried by the second mentioned 6. .AI miter'machinecomprising a Work table having a plurality of parallel 'slots in*y l itsface, a bar mounted to slide in one slot,

f saw guides carried by said bar, bars mounted in the other' slots, Workguides pivoted to the first mentioned bar and extending over the secondmentionedbars, means to fix the Work guides to the table, means to fixthe second mentioned bars in longitudinal adjustment, and clamps carriedby thesecond mentioned bars. i

` 7. A' miter machine comprising a Work table having a plurality ofparallel slots in its face, a barmounted to slidein one slot,

sawV guidescarriedby said bar, vbars mounted in the other slots, Workguides pivoted to the first `mentioned bar and extending over the secondmentioned bars, means to fix the Workv guides to the table atvariousidentical anguf lar adjustments, means to fix the second meneV tionedbars in longitudinal adjustment, and

clamps carried by the second mentioned bars.

8. A- miter-machine .comprising a ,Worky table havinga plurality ofparallel slots iny its face, a bar mounted to slide in one slot,` isawguides'carried by said bar, bars mounted second mentioned bars,meansto ix the secs ondv mentioned k1bars in) longitudinal adjustsecondmentioned bars;

f in the other-slots, Work guides pivoted to the f first mentioned barand extendingover` the 9."A"miter-machine comprising` ak Work' tablehaving a plurality .of parallel slotsinv its Aface, a bar'mountedtorslide, yalongfthe median .line of the table in one slot,fsaw

Y r guides carried by Vsaid-bar, bars upon opposite sides of the iirstmentioned bar mounted in; the other slots, Work guides pivotedrto andextending upon oppositesides of` the Y lirst mentioned bar @andyextending' over `the second mentioned bars, meansto x the Work guidesto the tableat various identical angu-

